A model for the CASH gel formed in alkali-activated slag cements

F Puertas, M Palacios, H Manzano, JS Dolado… - Journal of the European …, 2011 - Elsevier
For first time, an experimental and computational study has been conducted to define a
structural model for the CASH gel forming in alkali-activated slag (AAS) pastes that would …

The General Utility Lattice Program (GULP)

JD Gale, AL Rohl - Molecular Simulation, 2003 - Taylor & Francis
The General Utility Lattice Program (gulp) has been extended to include the ability to
simulate polymers and surfaces, as well as adding many other new features, and the current …

A new self-consistent empirical interatomic potential model for oxides, silicates, and silica-based glasses

A Pedone, G Malavasi, MC Menziani… - The Journal of …, 2006 - ACS Publications
A new empirical pairwise potential model for ionic and semi-ionic oxides has been
developed. Its transferability and reliability have been demonstrated by testing the potentials …

Do zeolites have negative Poisson's ratios?

JN Grima, R Jackson, A Alderson… - Advanced …, 2000 - Wiley Online Library
Auxetic behavior in zeolitic cage structures is predicted here using molecular modeling
calculations and explained by the “rotating squares” mechanism shown in the Figure. These …

Elastic properties of the main species present in Portland cement pastes

H Manzano, JS Dolado, A Ayuela - Acta materialia, 2009 - Elsevier
The elastic properties of the most important phases present in cement pastes have been
studied by force field atomistic methods. Calculations reproduce the mechanical properties …

Empirical potential derivation for ionic materials

JD Gale - Philosophical Magazine B, 1996 - Taylor & Francis
A program has been developed for the derivation of empirical interatomic potentials, with
particular regard to ionic materials and the use of shell models, incorporating two new …

Defect chemistry and oxygen ion migration in the apatite-type materials La 9.33 Si 6 O 26 and La 8 Sr 2 Si 6 O 26

JR Tolchard, MS Islam, PR Slater - Journal of Materials Chemistry, 2003 - pubs.rsc.org
Computer modelling techniques have been used to examine the mechanistic features of
oxygen ion transport in the La8Sr2Si6O26 and La9. 33Si6O26 apatite-oxides at the atomic …

Auxetic behaviour from rotating semi‐rigid units

JN Grima, V Zammit, R Gatt, A Alderson… - physica status solidi …, 2007 - Wiley Online Library
Auxetics (ie systems with negative Poisson's ratios) exhibit the unexpected feature of
becoming fatter when stretched and narrower when compressed. This property is highly …

Modeling of silicon substitution in SAPO-5 and SAPO-34 molecular sieves

G Sastre, DW Lewis, CRA Catlow - The Journal of Physical …, 1997 - ACS Publications
We investigate the energetics of Si island formation in Si-substituted aluminophosphate
molecular sieves. Lattice energy calculations confirm the stability of clusters (or islands) …

Shell-model molecular dynamics calculations of modified silicate glasses

A Tilocca, NH de Leeuw, AN Cormack - Physical Review B—Condensed Matter …, 2006 - APS
Molecular dynamics simulations of pure silica, sodium silicate, and soda-lime silicate
glasses have been carried out using a developed potential that includes polarization effects …